101202021018 has 48 divisors (see below), whose sum is σ = 250617284736. Its totient is φ = 28912347360.

The previous prime is 101202020981. The next prime is 101202021121. The reversal of 101202021018 is 810120202101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1799688 + ... + 1855068.

It is an arithmetic number, because the mean of its divisors is an integer number (5221193432).

Almost surely, 2^101202021018 is an apocalyptic number.

101202021018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

101202021018 is an abundant number, since it is smaller than the sum of its proper divisors (149415263718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101202021018 is a wasteful number, since it uses less digits than its factorization.

101202021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69899 (or 69896 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 101202021018 its reverse (810120202101), we get a palindrome (911322223119).

The spelling of 101202021018 in words is "one hundred one billion, two hundred two million, twenty-one thousand, eighteen".